Cannot Use Sage Kernel with Environment's JupyterLab

Luis Finotti

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Apr 18, 2025, 3:34:02 PMApr 18

to sage-support

I've always been able to run Sage in JupyterLab (in different environments) by simply linking the kernel to the $HOME/.local/share/jupyter/kernels/, as described here: https://doc.sagemath.org/html/en/installation/launching.html#setting-up-sagemath-as-a-jupyter-kernel-in-an-existing-jupyter-notebook-or-jupyterlab-installation

In my most recent installation, building 10.6 from source, I cannot. JupyterLab shows the 10.6 kernel, but when I create a notebook running Sage's kernel and run any command, it hangs, and then shows "No Kernel".

Below is the output of Jupyter Lab in the terminal from which I started it.

Any help would be greatly appreciated.

Luís

--------

[I 2025-04-18 15:21:39.756 ServerApp] Kernel started: 3506afee-ace1-456f-bffb-a6deb2557540
/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/bin/sage-venv-config:4: DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html
__import__('pkg_resources').require('sagemath-standard==10.6')
Traceback (most recent call last):
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 656, in _build_master
ws.require(__requires__)
~~~~~~~~~~^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 1063, in require
needed = self.resolve(parse_requirements(requirements))
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 890, in resolve
dist = self._resolve_dist(
req, best, replace_conflicting, env, installer, required_by, to_activate
)
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 936, in _resolve_dist
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (numpy 2.2.3 (/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages), Requirement.parse('numpy<2,>=1.21'), {'matplotlib'})

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/bin/sage-venv-config", line 4, in <module>
__import__('pkg_resources').require('sagemath-standard==10.6')
~~~~~~~~~~^^^^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3656, in <module>
@_call_aside
^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3640, in _call_aside
f(*args, **kwargs)
~^^^^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3669, in _initialize_master_working_set
working_set = _declare_state('object', 'working_set', WorkingSet._build_master())
~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 658, in _build_master
return cls._build_from_requirements(__requires__)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 671, in _build_from_requirements
dists = ws.resolve(reqs, Environment())
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 890, in resolve
dist = self._resolve_dist(
req, best, replace_conflicting, env, installer, required_by, to_activate
)
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 936, in _resolve_dist
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (numpy 2.2.3 (/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages), Requirement.parse('numpy<2,>=1.21'), {'matplotlib'})
/home/finotti/.venvs/myst/bin/python3: Error while finding module specification for 'sage.repl.ipython_kernel' (ModuleNotFoundError: No module named 'sage')
[I 2025-04-18 15:21:42.747 ServerApp] AsyncIOLoopKernelRestarter: restarting kernel (1/5), new random ports
/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/bin/sage-venv-config:4: DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html
__import__('pkg_resources').require('sagemath-standard==10.6')
Traceback (most recent call last):
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 656, in _build_master
ws.require(__requires__)
~~~~~~~~~~^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 1063, in require
needed = self.resolve(parse_requirements(requirements))
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 890, in resolve
dist = self._resolve_dist(
req, best, replace_conflicting, env, installer, required_by, to_activate
)
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 936, in _resolve_dist
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (numpy 2.2.3 (/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages), Requirement.parse('numpy<2,>=1.21'), {'matplotlib'})

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/bin/sage-venv-config", line 4, in <module>
__import__('pkg_resources').require('sagemath-standard==10.6')
~~~~~~~~~~^^^^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3656, in <module>
@_call_aside
^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3640, in _call_aside
f(*args, **kwargs)
~^^^^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3669, in _initialize_master_working_set
working_set = _declare_state('object', 'working_set', WorkingSet._build_master())
~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 658, in _build_master
return cls._build_from_requirements(__requires__)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 671, in _build_from_requirements
dists = ws.resolve(reqs, Environment())
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 890, in resolve
dist = self._resolve_dist(
req, best, replace_conflicting, env, installer, required_by, to_activate
)
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 936, in _resolve_dist
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (numpy 2.2.3 (/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages), Requirement.parse('numpy<2,>=1.21'), {'matplotlib'})
/home/finotti/.venvs/myst/bin/python3: Error while finding module specification for 'sage.repl.ipython_kernel' (ModuleNotFoundError: No module named 'sage')
[I 2025-04-18 15:21:45.762 ServerApp] AsyncIOLoopKernelRestarter: restarting kernel (2/5), new random ports
/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/bin/sage-venv-config:4: DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html
__import__('pkg_resources').require('sagemath-standard==10.6')
Traceback (most recent call last):
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 656, in _build_master
ws.require(__requires__)
~~~~~~~~~~^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 1063, in require
needed = self.resolve(parse_requirements(requirements))
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 890, in resolve
dist = self._resolve_dist(
req, best, replace_conflicting, env, installer, required_by, to_activate
)
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 936, in _resolve_dist
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (numpy 2.2.3 (/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages), Requirement.parse('numpy<2,>=1.21'), {'matplotlib'})

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/bin/sage-venv-config", line 4, in <module>
__import__('pkg_resources').require('sagemath-standard==10.6')
~~~~~~~~~~^^^^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3656, in <module>
@_call_aside
^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3640, in _call_aside
f(*args, **kwargs)
~^^^^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3669, in _initialize_master_working_set
working_set = _declare_state('object', 'working_set', WorkingSet._build_master())
~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 658, in _build_master
return cls._build_from_requirements(__requires__)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 671, in _build_from_requirements
dists = ws.resolve(reqs, Environment())
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 890, in resolve
dist = self._resolve_dist(
req, best, replace_conflicting, env, installer, required_by, to_activate
)
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 936, in _resolve_dist
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (numpy 2.2.3 (/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages), Requirement.parse('numpy<2,>=1.21'), {'matplotlib'})
/home/finotti/.venvs/myst/bin/python3: Error while finding module specification for 'sage.repl.ipython_kernel' (ModuleNotFoundError: No module named 'sage')
[I 2025-04-18 15:21:48.776 ServerApp] AsyncIOLoopKernelRestarter: restarting kernel (3/5), new random ports
/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/bin/sage-venv-config:4: DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html
__import__('pkg_resources').require('sagemath-standard==10.6')
Traceback (most recent call last):
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 656, in _build_master
ws.require(__requires__)
~~~~~~~~~~^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 1063, in require
needed = self.resolve(parse_requirements(requirements))
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 890, in resolve
dist = self._resolve_dist(
req, best, replace_conflicting, env, installer, required_by, to_activate
)
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 936, in _resolve_dist
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (numpy 2.2.3 (/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages), Requirement.parse('numpy<2,>=1.21'), {'matplotlib'})

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/bin/sage-venv-config", line 4, in <module>
__import__('pkg_resources').require('sagemath-standard==10.6')
~~~~~~~~~~^^^^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3656, in <module>
@_call_aside
^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3640, in _call_aside
f(*args, **kwargs)
~^^^^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3669, in _initialize_master_working_set
working_set = _declare_state('object', 'working_set', WorkingSet._build_master())
~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 658, in _build_master
return cls._build_from_requirements(__requires__)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 671, in _build_from_requirements
dists = ws.resolve(reqs, Environment())
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 890, in resolve
dist = self._resolve_dist(
req, best, replace_conflicting, env, installer, required_by, to_activate
)
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 936, in _resolve_dist
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (numpy 2.2.3 (/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages), Requirement.parse('numpy<2,>=1.21'), {'matplotlib'})
/home/finotti/.venvs/myst/bin/python3: Error while finding module specification for 'sage.repl.ipython_kernel' (ModuleNotFoundError: No module named 'sage')
[I 2025-04-18 15:21:51.790 ServerApp] AsyncIOLoopKernelRestarter: restarting kernel (4/5), new random ports
/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/bin/sage-venv-config:4: DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html
__import__('pkg_resources').require('sagemath-standard==10.6')
Traceback (most recent call last):
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 656, in _build_master
ws.require(__requires__)
~~~~~~~~~~^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 1063, in require
needed = self.resolve(parse_requirements(requirements))
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 890, in resolve
dist = self._resolve_dist(
req, best, replace_conflicting, env, installer, required_by, to_activate
)
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 936, in _resolve_dist
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (numpy 2.2.3 (/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages), Requirement.parse('numpy<2,>=1.21'), {'matplotlib'})

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/bin/sage-venv-config", line 4, in <module>
__import__('pkg_resources').require('sagemath-standard==10.6')
~~~~~~~~~~^^^^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3656, in <module>
@_call_aside
^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3640, in _call_aside
f(*args, **kwargs)
~^^^^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3669, in _initialize_master_working_set
working_set = _declare_state('object', 'working_set', WorkingSet._build_master())
~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 658, in _build_master
return cls._build_from_requirements(__requires__)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 671, in _build_from_requirements
dists = ws.resolve(reqs, Environment())
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 890, in resolve
dist = self._resolve_dist(
req, best, replace_conflicting, env, installer, required_by, to_activate
)
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 936, in _resolve_dist
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (numpy 2.2.3 (/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages), Requirement.parse('numpy<2,>=1.21'), {'matplotlib'})
/home/finotti/.venvs/myst/bin/python3: Error while finding module specification for 'sage.repl.ipython_kernel' (ModuleNotFoundError: No module named 'sage')
[I 2025-04-18 15:21:54.802 ServerApp] AsyncIOLoopKernelRestarter: restarting kernel (5/5), new random ports
/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/bin/sage-venv-config:4: DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html
__import__('pkg_resources').require('sagemath-standard==10.6')
Traceback (most recent call last):
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 656, in _build_master
ws.require(__requires__)
~~~~~~~~~~^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 1063, in require
needed = self.resolve(parse_requirements(requirements))
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 890, in resolve
dist = self._resolve_dist(
req, best, replace_conflicting, env, installer, required_by, to_activate
)
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 936, in _resolve_dist
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (numpy 2.2.3 (/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages), Requirement.parse('numpy<2,>=1.21'), {'matplotlib'})

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/bin/sage-venv-config", line 4, in <module>
__import__('pkg_resources').require('sagemath-standard==10.6')
~~~~~~~~~~^^^^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3656, in <module>
@_call_aside
^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3640, in _call_aside
f(*args, **kwargs)
~^^^^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 3669, in _initialize_master_working_set
working_set = _declare_state('object', 'working_set', WorkingSet._build_master())
~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 658, in _build_master
return cls._build_from_requirements(__requires__)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 671, in _build_from_requirements
dists = ws.resolve(reqs, Environment())
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 890, in resolve
dist = self._resolve_dist(
req, best, replace_conflicting, env, installer, required_by, to_activate
)
File "/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages/pkg_resources/__init__.py", line 936, in _resolve_dist
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (numpy 2.2.3 (/home/finotti/src/sage-10.6/local/var/lib/sage/venv-python3.13/lib/python3.13/site-packages), Requirement.parse('numpy<2,>=1.21'), {'matplotlib'})
/home/finotti/.venvs/myst/bin/python3: Error while finding module specification for 'sage.repl.ipython_kernel' (ModuleNotFoundError: No module named 'sage')
[W 2025-04-18 15:21:57.816 ServerApp] AsyncIOLoopKernelRestarter: restart failed
[W 2025-04-18 15:21:57.817 ServerApp] Kernel 3506afee-ace1-456f-bffb-a6deb2557540 died, removing from map.
[W 2025-04-18 15:21:59.814 ServerApp] 404 GET /api/kernels/3506afee-ace1-456f-bffb-a6deb2557540?1745004119800 (127.0.0.1): Kernel does not exist: 3506afee-ace1-456f-bffb-a6deb2557540
[W 2025-04-18 15:21:59.814 ServerApp] wrote error: 'Kernel does not exist: 3506afee-ace1-456f-bffb-a6deb2557540'
Traceback (most recent call last):
File "/home/finotti/.venvs/myst/lib/python3.13/site-packages/tornado/web.py", line 1790, in _execute
result = await result
^^^^^^^^^^^^
File "/home/finotti/.venvs/myst/lib/python3.13/site-packages/jupyter_server/auth/decorator.py", line 73, in inner
return await out
^^^^^^^^^
File "/home/finotti/.venvs/myst/lib/python3.13/site-packages/jupyter_server/services/kernels/handlers.py", line 75, in get
model = await ensure_async(km.kernel_model(kernel_id))
~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/home/finotti/.venvs/myst/lib/python3.13/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 508, in kernel_model
self._check_kernel_id(kernel_id)
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/home/finotti/.venvs/myst/lib/python3.13/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 539, in _check_kernel_id
raise web.HTTPError(404, "Kernel does not exist: %s" % kernel_id)
tornado.web.HTTPError: HTTP 404: Not Found (Kernel does not exist: 3506afee-ace1-456f-bffb-a6deb2557540)
[W 2025-04-18 15:21:59.817 ServerApp] 404 GET /api/kernels/3506afee-ace1-456f-bffb-a6deb2557540?1745004119800 (c7e9310ebc904a61...@127.0.0.1) 3.51ms referer=http://localhost:8888/lab/tree/Untitled2.ipynb

Luis Finotti

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Apr 27, 2025, 9:17:23 AMApr 27

to sage-support

Am I the only one with this problem? In the same machine 10.5 works fine with JupyterLab...

Jan Groenewald

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Apr 27, 2025, 9:23:11 AMApr 27

to sage-s...@googlegroups.com

Hi

See https://groups.google.com/g/sage-support/c/7YBbeU1jpJo/m/YozBi3h5CwAJ?utm_medium=email&utm_source=footer

Possibly this will fix it:

./sage --pip uninstall matplotlib numpy

followed by

./sage --pip install matplotlib numpy

Regards,

Jan

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Luis Finotti

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Apr 27, 2025, 9:57:13 AMApr 27

to sage-support

On Sunday, April 27, 2025 at 9:23:11 AM UTC-4 Jan wrote:

Hi

See https://groups.google.com/g/sage-support/c/7YBbeU1jpJo/m/YozBi3h5CwAJ?utm_medium=email&utm_source=footer

Possibly this will fix it:

./sage --pip uninstall matplotlib numpy

followed by

./sage --pip install matplotlib numpy

That worked! Thank you very much! Sorry I missed the referenced thread... I tried searching but missed it somehow.

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